strange problem with MQL5

[ch3mik]

Hi, I have this easy expert advisor:

 

//--------------------------------------------------------------- 

input int RSIHighLevel=70;          // High Level
input int RSILowLevel=30;           // Low Level
input double RSITopTol=1;           // RSI peak tolerance
input double RSILowTol=5;           // RSI low tolerance
//---
int    timer_counter=0;
//---
class TradingExpert
  {
public:
                   TradingExpert();
                  ~TradingExpert() { Deinit(); }
   void            Init();
   void            Deinit();
   void            Processing();
protected:
   double          rsi_current;
   bool            short_signal;
  };
TradingExpert ExtExpert;

TradingExpert::TradingExpert()
  {
   rsi_current=0;
   short_signal=false;
  }

void TradingExpert::Init()
  {  
   EventSetTimer(3);
  }

void TradingExpert::Deinit()
  {
  }

void TradingExpert::Processing()
  {
   rsi_current=70;
   Print("-----Input","short_signal",short_signal,"TIMER",timer_counter);
   if (rsi_current<RSIHighLevel-RSILowTol)
     {
      short_signal=false;
      Print("Change in if","short_signal",short_signal);
     }
   Print("After","short_signal",short_signal);
   if (timer_counter==2)
     {
      short_signal=true;
      Print("Change bottom","short_signal",short_signal);
     }
   Print("Output","short_signal",short_signal);
}

int OnInit()
  {
   ExtExpert.Init();
   return(0);
  }

void OnDeinit(const int reason)
  {
   ExtExpert.Deinit();  
  }

void OnTimer()
  {
   timer_counter=timer_counter+1;
   ExtExpert.Processing();
  } 

//---------------------------------------------------------------

 

In second execution (when timer_counter=2) of ExtExpert.Processing() function I set variable short_signal to true.

In third run of Processing() function all Prints must show variable short_signal true.

But Print with text "After" shows variable short_signal like false. Last Print with text "Output" shows

correctly short_signal true.

 

If I compare  in "if" right after "-----Input" not to "RSIHighLevel-RSILowTol" but number,

the Print with  text "After" shows variable short_signal correctly. Also, if inside "if" is not

command with  "short_signal=false;" the variable is shown correctly too.

[Paul]

ch3mik :

 

In second execution (when timer_counter=2) of ExtExpert.Processing() function I set variable short_signal to true.

In third run of Processing() function all Prints must show variable short_signal true.

But Print with text "After" shows variable short_signal like false. Last Print with text "Output" shows

correctly short_signal true.

 

If I compare  in "if" right after "-----Input" not to "RSIHighLevel-RSILowTol" but number,

the Print with  text "After" shows variable short_signal correctly. Also, if inside "if" is not

command with  "short_signal=false;" the variable is shown correctly too.

  

 

I suggest adding timer_counter into your trace print statements: this may assist with defining the bug.  Alternatively, an easier way to debug is to use F9 (breakpoint) at the beginning of TradingExpert::Processing() and F5 to run the expert, then F10 step through with all variables of interest in the watch window.

[ch3mik]

timer_counter is in first "Print" with text "Input". This shows what I expect - every three seconds is incremented.

If I trying debug this script, it is work ok. But in real work works bad. Function  TradingExpert::Processing() is so

easy that there cannot be any error (condition "rsi_current<RSIHighLevel-RSILowTol" cannot be true). Despite

all this in metatrader experts window after third run of Processing() I see  "After short_signal false".

 

Can you try this script, if you get the same result?

 

Maybe problem is in variable declaration or in MQL5 ?

 

 Thank you

[Ilyas]

ch3mik :

timer_counter is in first "Print" with text "Input". This shows what I expect - every three seconds is incremented.

If I trying debug this script, it is work ok. But in real work works bad. Function  TradingExpert::Processing() is so

easy that there cannot be any error (condition "rsi_current<RSIHighLevel-RSILowTol" cannot be true). Despite

all this in metatrader experts window after third run of Processing() I see  "After short_signal false".

 

Can you try this script, if you get the same result?

 

Maybe problem is in variable declaration or in MQL5 ?

 

 Thank you

Thank you for your message. There was the optimizer bug (optimizer doesn't work in debug compilation). Bug fixed, please wait for updates.